this machine will be for desktop apps, including MS Office, audio encoding, video editing, programming, web browsing, accounting, etc. Probably not a whole lot of database work as a percent of the total load. I'm considering splitting the OS from the data, so maybe C:\ drive is SSD in RAID 0? and the data on D:\ is HDD on RAID 5? Using a controller card? The Marvell HyperDuo idea is intriguing, though. Recommendations?